Knee brace



FIG. 1 is a perspective view of a knee brace showing the design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof; and,

FIG. 5 is a right side view thereof.

The broken lines depict portions of a knee brace and form no part of theclaim.

CLAIM We claim the ornamental design for a knee brace, as shown anddescribed.